Heterotic strings on G_2 orbifolds

Details Heterotic strings on G_2 orbifolds Heterotic strings on G_2 orbifolds

2010-09-22

arxiv.org/abs/1009.4422v1

JHEP 1011:115,2010

Physics

High Energy Physics

High Energy Physics - Theory

LaTex, 21 pages

Scientific paper

10.1007/JHEP11(2010)115

We study compactification of heterotic strings to three dimensions on orbifolds of G_2 holonomy. We consider the standard embedding and show that the gauge group is broken from E_8 x E_8 or SO(32) to F_4 x E_8 or SO(25) respectively. We also compute the spectrum of massless states and compare with the results obtained from reduction of the 10-dimensional fields. Non-standard embeddings are discussed briefly. For type II compactifications we verify that IIB and IIA have equal massless spectrum.

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